https://vladde.net/tags/swift/Recent content in Swift on Feel the magic of kool.Hugoen-usMon, 12 Oct 2026 01:15:58 +0200https://vladde.net/blog/swift-macros-for-ourselves/Mon, 12 May 2025 00:00:00 +0200https://vladde.net/blog/swift-macros-for-ourselves/<p>When migrating our app to become Swift 6 compatible, I took the opportunity to take a look into Swift macros, since our storage helper had a lot of duplicate boilerplate code.</p> <h2 id="using-macros">Using macros</h2> <p>Mapping API data models to Core Data models included a lot of (almost) duplicate code for every method: calling code in the correct context, fetching existing (or creating new) models, saving context, etc.</p> <p>I created a macro which smooths out this process, while still being type-safe. This is what a mapping method looks like:</p>